User guide

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Miscellaneous
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This early-warning dew-point switch is designed for use in monitoring cooling water pipes or chilled
surfaces in order to determine if temperatures are approaching the dewpoint. It is suitable for mounting
on flat and round surfaces. The switch measures the relative humidity prevailing directly at the chilled
surface and can thus be used to:
• regulating cooling performance
• switching cooling systems ON and OFF
• signalling if the temperature is approaching the dew-point
Status indication with LED, showing condensation danger
Switching point at 90 %rh, hysteresis 5 %rh
Dew-point switch
Ambient temperature 0 ... 50
o
C
Protection class IP40
Mounting wall, duct or pipe (max. 50 mm)
Power supply 24Vac; 0,3VA
Switch function/capacity potential free changeover contact; max. 24 Vac/dc, 1 A
Wiring connection 5-pole push-in terminals, max. 1,5mm
2
Type
HSS-DPS